Actor Kirsten Dunst has revealed that she was scared to work with actor Viggo Mortensen in their upcoming movie The Two Faces of January.

star said that although Mortensen's casting convinced her to accept the part, she was nervous about working with him, reported Harper's Bazaar magazine.

"He's one of those actors. The first time I met him he was very reserved. It was in an elevator. I was like, 'Hi'. He was like, 'Oh hi.' I learned later he was very shy. So I was nervous, even a little scared, to work with him. I thought, 'This is going to be intense," she said.

Dunst, 31, also said that Mortensen, 55, may seem like a very serious man but he's actually very funny and she thinks he should consider more comedic roles.

"I laughed so much with Viggo... I'm sure he wouldn't be happy with people knowing how fun he is," she added. The movie will be releasing in the UK on April 16.